Optimal energy management of a hybrid diesel generator and battery supplying a RTG crane with energy recovery capability

In this paper, an optimal energy management model for a RTG crane supplied by hybrid diesel generator/battery system is developed. The aim of the to reduce cost spending and CO2 emission minimizing amount fuel consumed generator, maximizing potential recovered through regenerative braking during container lowering phase. As case study, 40 tonnes operating in South Africa has been selected. demand profile, size generator as well battery storage are used input Simulations, complete handling cycle, have conducted evaluate techno-economic performances developed use optimally dispatch power flow different phases operation. compared baseline where alone handle same demand, simulation results selected day operation shown that using proposed model, 40.6% reduction achievable without recovery; while 82.17% recovery included. Looking further into stochastic nature analysis on year revealed 76.04% can be potentially saved system. result true payback period overall investment may 1.36 years. Additionally, it seen from peak reduced, assist reducing rating initial generator.